Reversing-gear



UNITED STATES PATENT @rricn.

HENRY BURTON, OF PORT HURON, MICHIGAN.

REVERSlNG-GEAR.

SPECIFICATION forming part of Letters Patent No. 318,598, dated May 26,1885.

Application filed January 14, 1885.

To all whom it may concern.-

Be it known that I, HENRY BURTON, of Port Huron, in the county of St.Clair and State of Michigan, have invented new and useful Improvementsin Reversing-Gear; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, which form a part of this specification.

This invention relates to an improvement in reversing-gear; and itconsists in the peculiar combination and the construction andarrangement of parts, more fully hereinafter described and claimed.

In the accompanying drawings, which form a part of this specification,Figure 1 is a perspective view of my device, showing the sliding sleevewith its wedges withdrawn. Fig. 2 is a vertical central longitudinalsection through the axis of the shaft. Fig. 8 is a cross-section on linea: x in Fig. 2. Fig. 4 is a plan.

A is the shaft of the valve-eccentric. B is a collar fixed upon saidvalve-eccentric shaft, and O is the valve-eccentric, pivotally securedat D to the fixed collar B, so that it may be oscillated around thatpivot in the plane of its motion. The eccentric is provided with theopening E through its body, through which the shaft A passes, and whichis of proper size and shape to admit of oscillating the eccentric to asufficient degree to reverse the valves.

F is a sliding sleeve fitted upon the shaft A, and is connected with thereversing-lever H, as shown, and by means of which the sliding sleevemay be projected into the opening E of the eccentric or withdrawntherefrom as far as the stop I will admit.

G G are two wedges secured upon opposite sides of the sliding sleeve,and are inversely inclined to each other. These wedges G G arepreferably spiral-shaped, with their center at the pivot D, as shown inFig. 3. A recess, J, of the same shape and form as the spiral wedge G,is constructed in the body of the eccentric, so that when the sleeve isprojected within the opening E of the eccentric the wing G may enterinto said recess J. The

(No model.)

spiral wedges G and G have such relative positions upon the slidingsleeve that when the latter is withdrawn as far as the stop I willpermit the wedge G projects a short distance within the opening E, whilethe wedge G is entirely withdrawn and the eccentric is firmly p lockedin position. Vhen the sliding sleeve is projected from this positioninto the opening E, the wedge G, in entering the opening E, mustoscillate the eccentric aroundits pivot, while the wedge G graduallyenters the recess, thus permitting the oscillation of the eccentric. Inwithdrawing the sleeve the wedge G, in withdrawing from its recess J,must oscillate the eccentric, while the wedge G withdraws in the samedegree to permit such oscillation. During the whole range of theoperation of the sliding sleeve the wedges G G always keep the eccentriclocked in position, as the incline to the two wedges is made toperfectly correspond with each other. At the two extreme positions ofthe sliding sleeve one side of the opening E finds its bearing againstthe sleeve. While the operation of one wedge produces the oscillation,the joint operation of both in each case locks the cocentric, and alsokeeps the sliding sleeve from turning upon its shaft, so that it willhave a simple sliding motion. To get a large degree of oscillation, thepivotal point of the eccentric is preferably placed as near the shaft Aas convenient, and for this purpose a slot, K, may be cut into thesleeve, and such slot may be even extended into the shaft, if necessary.

I am aware of the Patent No. 274,436, and make no claim to theconstruction shown therein as forming part of my invention.

What I claim as my invention is- 1. In a reversing-gear, a slidingsleeve upon the shaft of the eccentric, operated by the reversing'lever,and having two spiral wedges inverse to each other upon its face, incombination with an eccentric pivotally secured upon the shaft, andhaving an opening through it, through which the shaft and the spiralwedges pass, and of suitable size to oscillate the eccentric to effectthe reversal by the operation of the spiral wedges upon the slidingsleeve directly upon the eccentric, substan- H, operating. theslidingsleeve, and the stop I, tially as and for the purposes described. allcombined; constructed,wand operating sub- 2. In a reversing-gear, theshaft A, having stantially as specified. fixed collar B, the eccentric0, having pivot 5 D, and opening E, the sliding sleeve F, hav-\Vitnesses:

ing inverse spiral wedges G G, operating di- E. J. SOULLY, rectly uponsaid eccentric, the reversing-lever E; W. ANDREWS.

HENRY BURTON.

